Word: metalled
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Dates: during 1950-1959
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Snarled Government. While Castro was concentrating his energies on vengeance, government business got badly snarled. At the presidential palace, crowds of job-seekers and well-wishers milled about; their weapons had been methodically checked at the door with numbered metal tags. Devoid of political experience, President Manuel Urrutia, onetime judge, kept the Cabinet in all-night sessions, quibbling over petty details. "He might make a President in normal times," said one of his own assistants, "but these are not normal times." The treasury was still running on a hand-to-mouth basis, collecting $2,500,000 a day in taxes...
...suds in his wife's dishpan reminded Alastair Pilkington that the surface of a liquid is ideally flat. Back at the plant he floated molten glass on molten metal and found that its bottom side took on a shiny finish. In the full-scale machine, which took seven years to get working properly, a wide ribbon of soft glass is floated in a tank of molten metal (the metal or alloy used is a trade secret). As the ribbon moves to the far end of the tank, it is cooled by a controlled atmosphere and finally solidifies. The result...
...meet the demands of missile makers, U.S. scientists have worked for years on metals that can resist the high temperatures generated by supersonic speeds. One such metal is molybdenum, which melts at 4748° F., v. about 3000° F. in commonly used alloys. But making molybdenum castings was long impossible; its melting point is so high that it destroyed the crucible holding it. Last week the U.S. Bureau of Mines announced "a major metallurgical breakthrough"; it had succeeded in making molybdenum castings...
Metallurgists melted a 30-lb. piece of molybdenum with a high-density electric arc in a copper-lined, water-cooled crucible. The molten molybdenum was then poured through a series of troughs into a rotating graphite cylinder which forced the metal to cling to its walls while it hardened, produced a molybdenum cylinder 4½ in. wide and 8 in. long...
...development proves commercially successful, missile engineers will have greater flexibility in designing vital molybdenum parts for missiles. Molybdenum parts are now made by pressing or melting the powdered metal into ingots or billets, then forging, machining or extruding it. The new casting method may permit not only more intricate shapes but also lower costs, since the process may cut the number of steps necessary. But the major U.S. moly producer, American Metal Climax, Inc.. cautioned that it may be some time before the casting method becomes commercially feasible...